Cognition before 0.13.0 contains an unauthenticated remote code execution vulnerability due to defaulting its agent sandbox backend to local execution and shipping no authentication on its REST/SSE API. Attackers can create a session via POST /sessions and post a message via POST /sessions/{id}/messages without credentials, causing the Deep Agents ReAct loop to run attacker-directed shell commands through the local shell backend, resulting in remote code execution as the server process.
History

Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Cognicellai
Cognicellai cognition
Vendors & Products Cognicellai
Cognicellai cognition

Tue, 20 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Mon, 19 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Description Cognition before 0.13.0 contains an unauthenticated remote code execution vulnerability due to defaulting its agent sandbox backend to local execution and shipping no authentication on its REST/SSE API. Attackers can create a session via POST /sessions and post a message via POST /sessions/{id}/messages without credentials, causing the Deep Agents ReAct loop to run attacker-directed shell commands through the local shell backend, resulting in remote code execution as the server process.
Title Cognition < 0.13.0 Unauthenticated RCE via Local Shell Backend
Weaknesses CWE-1188
CWE-306
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-10-19T18:22:57.431Z

Updated: 2026-10-23T13:28:30.752Z

Reserved: 2026-10-12T15:52:36.682Z

Link: CVE-2026-109437

cve-icon Vulnrichment

Updated: 2026-10-20T16:03:10.326Z

cve-icon NVD

Status : Deferred

Published: 2026-10-19T19:17:19.807

Modified: 2026-10-20T17:17:28.413

Link: CVE-2026-109437

cve-icon Redhat

No data.